(Reuters) -The Russian central bank said it will suspend the buying of gold from banks from Tuesday to meet increased demand for the precious metal from households, its latest attempt to weather the storm on Russian markets in the face of Western sanctions. “Currently, households’ demand for buying physical gold in bars has increased, driven, in particular, by the abolition of value-added tax on these operations,” the central bank said in a statement. The central bank raised the key rate to 20% from 9.5% on Feb. 28 as the rouble crashed to record lows and people rushed to withdraw money from b…